Electrical connector

ABSTRACT

An electrical connector and a clamping member thereof. The electrical connector includes an insulating body, multiple terminals fixed to the insulating body, a stiffener surrounding a periphery of the insulating body, a load plate, and a clamping member located between the load plate and the stiffener. A grasping portion protrudes forward from the clamping member. The grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections. A distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation application of U.S. application Ser. No. 15/157,815, filed May 18, 2016, which itself claims priority to and benefit of, under 35 U.S.C. §119(a), Patent Application Nos. 201520471305.0 filed in P.R. China on Jul. 3, 2015, and 201520767583.0 filed in P.R. China on Sep. 29, 2015. The entire contents of the above-identified applications are incorporated herein by reference.

Some references, if any, which may include patents, patent applications and various publications, may be cited and discussed in the description of this invention. The citation and/or discussion of such references, if any, is provided merely to clarify the description of the present invention and is not an admission that any such reference is “prior art” to the invention described herein. All references listed, cited and/or discussed in this specification are incorporated herein by reference in their entireties and to the same extent as if each reference was individually incorporated by reference.

FIELD OF THE INVENTION

The present invention relates to an electrical connector and a clamping member thereof, and more particularly to an electrical connector for electrically connecting a chip module and a clamping member thereof.

BACKGROUND OF THE INVENTION

Chinese Patent Application No. 201210217573.0 discloses an electrical connector used for electrically connecting a chip module to a printed circuit board. The electrical connector includes an insulating body having conductive terminals received therein, a reinforce member located at outside of the insulating body, a lever and a connecting rod installed to two opposite ends of the reinforce member, and a load plate and a holding member installed to the reinforce member. The reinforce member is provided with a first end and a second end opposite to the first end. The holding member and the lever are installed to the first end of the reinforce member, and the load plate and the connecting rod are installed to the second end of the reinforce member. The holding member includes a rotating member installed to the first end of the reinforce member, an elastic member located between the rotating member and the reinforce member, a shaft fixing the rotating member and the elastic member onto the reinforce member, and a clamping member installed onto the rotating member and used for fixing the chip module. The clamping member includes a frame-shaped body portion, a guide portion extending downward from the body portion, a grasping portion extending outward from the body portion, and an assembling portion extending outward from the body portion. The body portion is provided with multiple positioning portions extending downward. The positioning portions jointly form a space that receives the chip module. When the electrical connector is in use, the chip module is fixed onto the clamping member through pasting or in other manners, the clamping member is installed onto the rotating member, the lever, the connecting rod and the load plate are opened by rotation to make the lever, the connecting rod and the load plate in an on state, the grasping portion of the clamping member is pressed to make it rotate and close so as to install the chip module onto the insulating body, the guide portion of the clamping member locates on the outside of the insulating body to make the chip module and the conductive terminals aligned accurately, the load plate, the connecting rod and the lever are closed by rotation, a second operating lever of the connecting rod is buckled onto a first buckling portion of a first fixing member, a first operating lever of the connecting rod is buckled onto a second buckling portion of a second fixing member, and a first pressing portion of the lever is pressed onto the tongue of the load plate, to make the load plate provide a pressing force for the chip module, which effectively ensures good electrical connections between the chip module and the conductive terminals. As the load plate and the holding member are opened respectively on two opposite ends of the reinforce member, the load plate and the holding member occupy a greater space of the circuit board, resulting in that it is easy to contact other electronic elements on the circuit board.

Therefore, a heretofore unaddressed need exists in the art to address the aforementioned deficiencies and inadequacies.

SUMMARY OF THE INVENTION

In one aspect, the present invention relates to an electrical connector that saves space and a clamping member thereof.

In one embodiment, an electrical connector for electrically connecting a chip module includes: an insulating body; a plurality of terminals received in the insulating body, for electrically connecting the chip module; a stiffener surrounding a periphery of the insulating body; a load plate for pressing the chip module, a rear end of the load plate being pivoted to the stiffener; and a clamping member located between the load plate and the stiffener, for fixing the chip module to carry the chip module onto the insulating body. A grasping portion protrudes forward from the clamping member, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections. A distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections.

In one embodiment, the stiffener is provided with a first pivoting portion and a second pivoting portion which are located on a same side of the insulating body, the first pivoting portion is located between the second pivoting portion and the insulating body; a rear end of the load plate is pivoted to the second pivoting portion; a guide frame is pivoted to the first pivoting portion, the guide frame has four edges defining an opening for receiving the chip module; two sliding rails are respectively provided on two opposite sides of the opening; and the clamping member is provided with two side plates on two opposite sides thereof, the two side plates are respectively carried by the two sliding rails and slidable along the two sliding rails.

In one embodiment, when the clamping member is assembled on the guide frame and the guide frame moves towards a closing direction to be installed on the insulating body, the sliding rails are located on two opposite sides of the insulating body and located between the stiffener and the side plates, and an upper surface of each of the sliding rails is not higher than an upper surface of the insulating body.

In one embodiment, a first stopping portion is formed by extending upward from each of the sliding rails to be stopped to a side edge of corresponding one of the side plates, a second stopping portion is formed by extending horizontally from each of the first stopping portion, a front end of each of the first stopping portion is flush with a front end of corresponding one of the sliding rails, a groove is concavely disposed from an upper surface of the side plate, the second stopping portion is stopped above the groove, and the second stopping portion is not higher than the upper surface of the side plate.

In one embodiment, the front end of each of the second stopping portion is not flush with the front end of corresponding one of the sliding rails.

In one embodiment, the guide member includes a plastic member and a metal member insert molded to the plastic member, the plastic member has two opposite side arms and a rear arm connected to the two side arms, the side arms are provided with the sliding rails.

In one embodiment, the metal member is provided with two opposite first arms, and a second arm and a third arm connected to the two first arms, the first arms are insert molded into the side arms and the first arms go beyond the side arms along their length directions, the second arm is insert molded into the rear arm, and the third arm bends downward from the first arms to reserve the clamping member when the clamping member is installed to the guide member.

In one embodiment, the head is at least partially located right above the third arm when the load plate is closed.

In one embodiment, the load plate is provided with a through hole for receiving the chip module, and a plurality of receiving holes respectively in front of and behind the through hole, each receiving hole is provided for a locking member to pass therethrough to fix the load plate to the stiffener, and the load plate is further provided with a bending portion pivoted to the stiffener, and a protruding portion protruding backward at each of the two opposite sides of the bending portion, wherein the two protruding portions are provided with the receiving holes.

In one embodiment, the grasping portion is provided with a perforation located below the receiving holes for the locking member to pass through.

In one embodiment, the perforation is partially located between the two first sections.

In one embodiment, the perforation is partially located between the two third sections.

In one embodiment, when the load plate is closed, the head is located forward beyond a front end of the stiffener, and the first sections, the second sections, and the third sections are not located beyond the front end of the stiffener.

In one embodiment, when the load plate is closed, the head is located forward beyond a front end of the load plate.

In one embodiment, the head bends upward to be higher than the third sections.

In one embodiment, a clamping member has a base portion for fixing a chip module, where a grasping portion protrudes forward from the base portion, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections.

In one embodiment, the head bends upward to be higher than the third sections.

In one embodiment, the clamping member is provided with a perforation vertically penetrating the grasping portion, and the perforation is partially located between the two first sections.

In one embodiment, the perforation is partially located between the two third sections.

In one embodiment, the grasping portion has a chamfer formed by tilting and extending downward from the base portion to connect the two first sections.

Compared with the related art, in certain embodiment of the present invention, the stiffener is provided with the first pivoting portion and the second pivoting portion which are located on the same side of the insulating body, the carrier is pivoted to the first pivoting portion, and the load plate is pivoted to the second pivoting portion, so that the carrier and the load plate are opened on the same side of the insulating body, thus occupying a small space of the circuit board.

These and other aspects of the present invention will become apparent from the following description of the preferred embodiment taken in conjunction with the following drawings, although variations and modifications therein may be effected without departing from the spirit and scope of the novel concepts of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings illustrate one or more embodiments of the invention and together with the written description, serve to explain the principles of the invention. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.

FIG. 1 is a schematic three-dimensional exploded view of an electrical connector and a clamping member thereof according to a first embodiment of the present invention.

FIG. 2 is a schematic exploded view of a guide frame of the electrical connector and a clamping member thereof according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram showing that a chip module of the electrical connector and a clamping member thereof according to the first embodiment of the present invention is installed to a clamping member.

FIG. 4 is a schematic diagram showing that a clamping member of the electrical connector and a clamping member thereof according to the first embodiment of the present invention is installed to a guide frame.

FIG. 5 is a schematic diagram showing that a guide frame of the electrical connector and a clamping member thereof according to the first embodiment of the present invention is closed by rotation.

FIG. 6 is a side view showing that a guide frame of the electrical connector and a clamping member thereof according to the first embodiment of the present invention is closed by rotation.

FIG. 7 is a sectional view showing that a guide frame of the electrical connector and a clamping member thereof according to the first embodiment of the present invention is closed by rotation.

FIG. 8 is a schematic three-dimensional exploded view of an electrical connector and a clamping member thereof according to a second embodiment of the present invention.

FIG. 9 is a side view of the electrical connector and a clamping member thereof before assembling a chip module according to the second embodiment of the present invention.

FIG. 10 is a side view of the electrical connector and a clamping member thereof after closing of a load plate according to the second embodiment of the present invention.

FIG. 11 is a top view of the electrical connector and a clamping member thereof after closing of a load plate according to the second embodiment of the present invention.

FIG. 12 is a schematic three-dimensional view of a metal member of an electrical connector and a clamping member thereof according to a third embodiment of the present invention.

FIG. 13 is a schematic three-dimensional view of a metal member of an electrical connector and a clamping member thereof according to a fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Various embodiments of the invention are now described in detail. Referring to the drawings, like numbers indicate like components throughout the views. As used in the description herein and throughout the claims that follow, the meaning of “a”, “an”, and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein and throughout the claims that follow, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise. Moreover, titles or subtitles may be used in the specification for the convenience of a reader, which shall have no influence on the scope of the present invention.

It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.

Furthermore, relative terms, such as “lower” or “bottom” and “upper” or “top,” may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the “lower” side of other elements would then be oriented on “upper” sides of the other elements. The exemplary term “lower”, can therefore, encompasses both an orientation of “lower” and “upper,” depending of the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below.

As used herein, “around”, “about” or “approximately” shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term “around”, “about” or “approximately” can be inferred if not expressly stated.

As used herein, the terms “comprising”, “including”, “carrying”, “having”, “containing”, “involving”, and the like are to be understood to be open-ended, i.e., to mean including but not limited to.

The description will be made as to the embodiments of the present invention in conjunction with the accompanying drawings in FIGS. 1-13. In accordance with the purposes of this invention, as embodied and broadly described herein, this invention, in one aspect, relates to an electrical connector.

FIGS. 1-7 shows an electrical connector according to a first embodiment of the present invention. The electrical connector of the present invention is used for electrically connecting a chip module 6 that includes a socket and a buckle assembly for fixing the chip module 6 to the socket. The socket includes an insulating body 1, multiple terminals (not labeled) fixed into the insulating body 1 and used for electrically connecting the chip module 6. The buckle assembly includes a stiffener 2 located around the periphery of the insulating body 1, a guide frame 4 with a rear end pivoted onto the stiffener 2, and a load plate 3 also with a rear end pivoted to the stiffener 2, used for pressing the chip module 6.

As shown in FIGS. 1 and 4, the insulating body 1 is substantially rectangular. The insulating body 1 has a first side wall 10 at each of left and right sides of the insulating body 1, and a second sidewall 11 at each of front and rear ends of the insulating body 1. Each of the second sidewalls 11 connects the first sidewalls 10. Each of the first sidewalls 10 is concavely provided with a concave portion 100. An upper surface of each of the second sidewalls 11 is concavely provided with two positioning slots 110, and the positioning slots 110 penetrate lower surfaces of the second sidewalls 11.

As shown in FIGS. 1, 4 and 5, the stiffener 2 includes a bottom plate 20, and a first metal sheet 21 and a second metal sheet 22 riveted onto the bottom plate 20. The first metal sheet 21 is provided thereon with a first pivoting portion 210 for being pivoted to the guide frame 4, and the second metal sheet 22 is provided thereon with a second pivoting portion 220. The bottom plate 20 is a hollow frame surrounding the insulating body 1. The first pivoting portion 210 and the second pivoting portion 220 are located behind the insulating body 1, and the first pivoting portion 210 is located in front of the second pivoting portion 220. The bottom plate 20 is provided with three locking portions 23. Two of the locking portions 23 are located on left and right sides of the second pivoting portion 220, and another locking portion 23 is located in front of the insulating body 1. A front end of the bottom plate 20 is further provided with a reserved slot 24. The middle of the bottom plate 20 is provided with a frame opening 200 for receiving the insulating body 1. The bottom plate 20 is provided with a reinforce rib 201 in front of the frame opening 200, which is disposed lengthwise in a left-right direction. The length of the reinforce rib 201 is less than that of a front side of the frame opening 200, and a center line of the reinforce rib 201 along a front-rear direction passes through the locking portions 23. The reinforce rib 201 has a raised portion 2011 protruding upward from an upper surface of the bottom plate 20, and an extending portion 2012 is formed by horizontally extending from the raised portion 2011. The extending portion 2012 has a free end opposite to the raised portion 2011, and the bottom and left and right sides of the raised portion 2011 are connected to the bottom plate 20.

As shown in FIGS. 1, 4 and 5, the load plate 3 is made of a metal material. The middle of the load plate 3 is provided with a through hole 30 for the chip module 6 to pass through. A rear end of the load plate 3 is provided with a bending portion 31. The bending portion 31 is pivoted to the second pivoting portion 220 through a first fixing pin 7. A projection 32 protrudes backward on each of two opposite sides of the bending portion 31 from the load plate 3. The load plate 3 is provided with three receiving holes 33 corresponding to the three locking portions 23. One receiving hole 33 is located in front of the through hole 30, the other two receiving holes 33 are located behind the through hole 30 and disposed at the projections 32. A locking member 34 passes through the receiving holes 33 to be locked with the locking portions 23 so as to fix the load plate 3 onto the stiffener 2. In this embodiment, the locking member 34 is a screw. The load plate 3 is provided, at the periphery of the receiving holes 33, with a protrusion portion 35 that protrudes downward.

As shown in FIGS. 1, 3 and 4, a clamping member 5 used for fixing the chip module 6. The clamping member 5 is made of a plastic material, and has a base portion for fixing the chip module 6. Two side plates 51 are respectively provided at two opposite sides of the base portion, and a front plate 57 and a rear plate 58 are respectively provided at the other two opposite sides of the base portion to be connected to the two side plates 51. The two side plates 51, the front plate 57 and the rear plate 58 define a receiving hole 50 for the chip module 6 to pass through. An upper surface of each of the side plates 51 is concavely provided with a groove 510, a bottom surface of each of the side plates 51 is provided with a sliding slot 511, and a front end of each of the sliding slots 511 is provided with a fixing hole 512. Two protruding blocks 52 protrude horizontally from a rear end of the rear plate 58. The clamping member 5 is provided with four positioning portions 520 corresponding to the four positioning slots 110. Two of the positioning portions 520 are disposed at lower surfaces of the protruding blocks 52, the other two positioning portions 520 are disposed at a lower surface of the front plate 57. The positioning portions 520 are big-end-up cylinders. The positioning portions 520 cooperate with the positioning slots 110 to position the clamping member 5 to the insulating body 1. The clamping member 5 is provided with six fixing portions 53. The fixing portions 53 are hooks clipping to a bottom surface of the chip module 6, to fix the chip module 6 to the clamping member 5. The clamping member 5 is provided with a grasping portion 54 protruding forward from the front plate 57. Two sides of the grasping portion 54 have grasp spaces 55 for an operator to grasp the clamping member 5. The grasping portion 54 is provided with a perforation 540 vertically penetrating the grasping portion 54 and located below the receiving hole 33 for the locking member 34 to pass through. The length of the perforation 540 along a front-rear direction is greater than the length along a left-right direction.

As shown in FIGS. 1, 2, 4 and 5, the guide frame 4 includes a plastic member 41 and a metal member 42 insert molded to the plastic member 41, to increase strength of the plastic member 41. The height of the guide frame 4 is not higher than an upper surface of the side plate 51. The plastic member 41 is substantially U-shaped, and has two opposite side arms 411 and a rear arm 412 connected to the two side arms 411. The rear arm 412 is pivoted to the first pivoting portion 210 through a second fixing pin 8. The rear arm 412 is concavely provided with two receiving grooves 4120 to receive the protruding blocks 52. Each of the two side arms 411 is provided with a sliding rail 413. The two sliding rails 413 are located on two opposite sides of the insulating body 1 respectively. Upper surfaces of the sliding rails 413 are not higher than the upper surface of the insulating body 1, and the upper surfaces of the sliding rails 413 are lower than the upper surface of the rear arm 412. The side plates 51 respectively slide on the sliding rails 413, and the sliding rails 413 are located between the stiffener 2 and the side plates 51. The upper surfaces of the sliding rails 413 are provided with two convex pillars 4130. The convex pillars 4130 respectively enter into the sliding slots 511 to guide the clamping member 5 to slide, and when the convex pillars 4130 slide in the sliding slots 511 to where the convex pillars 4130 are snapped to the fixing holes 512, the clamping member 5 stops sliding. A first stopping portion 414 is formed by extending upward from each of the sliding rails 413 to be stopped to a side edge of the side plate 51, a second stopping portion 415 is formed by extending horizontally from the first stopping portion 414 to be stopped above the groove 510. The second stopping portion 415 is not higher than the upper surface of the corresponding side plate 51. A front end of the second stopping portion 415 has a guide surface 4150 used for guiding the clamping member 5 to enter into the guide frame 41. A front end of each of the first stopping portions 414 is flush with a front end of the corresponding sliding rail 413. The front end of each of the second stopping portions 415 is not flush with the front end of the corresponding sliding rail 413. A protruding portion 416 is formed by protruding upward from each of the sliding rails 413 to connect the rear arm 412. An upper surface of the protruding portion 416 is higher than the upper surfaces of the sliding rails 413. The protruding portion 416 is as high as the rear arm 412, and the front end of the protruding portion 416 is located forward beyond the front end of the rear arm 412. Along a left-right direction, the width of the protruding portion 416 is greater than the width of the second stopping portion 415, an inner side of the protruding portion 416 is flush with inner sides of the sliding rails 413, and an outer side of the protruding portion 416 is flush with an outer side of the first stopping portion 414. Each of the side arms 411 is provided with a hook portion 417. The hook portions 417 are respectively snapped into the concave portions 100, to buckle the guide frame 4 onto the insulating body 1. The metal member 42 has two opposite first arms 421, and a second arm 422 and a third arm 423 connected to the two first arms 421. The third arm 423 is located in front of the second arm 422. The two first arms 421, the second arm 422 and the third arm 423 define an opening 420 for the chip module 6 to pass through, and the grasp spaces 55 are in communication with the opening 420. The first arms 421 are insert molded into the side arms 411, and the first arms 421 go beyond the side arms 411 along their length directions. The second arm 422 is insert molded into the rear arm 412. The third arm 423 bends downward from the first arms 421 to be lower than the fixing portion 53, to reserve the fixing portion 53 when the clamping member 5 is installed to the guide frame 4. The third arm 423 is received in the reserved slot 24.

When in use, at first, the chip module 6 is installed into the clamping member 5, and the clamping member 5 slides on the sliding rail 413 from front to back along a direction parallel to an upper surface of the guide frame 4, and stops sliding when the convex pillars 4130 are snapped to the fixing holes 512; then, the guide frame 4 is rotated downward, the positioning portions 52 of the rear plate 58 are first positioned into the positioning slots 110 of the insulating body 1, and the hook portion 417 of the guide frame 4 is then snapped with the concave portion 100 of the insulating body 1, to cause the chip module 6 to be aligned with the insulating body 1; finally, the load plate 3 is rotated downward, and the locking member 34 is locked to the locking portion 23, so that the load plate 3 is closed and fixed onto the stiffener 2, to cause the load plate 3 to press the chip module 6 to fully urge the terminals (not shown). When the load plate 3 is closed, the head 54 d is located forward beyond the front end of the load plate 3, the head 54 d is at least partially located directly above the third arm 423, and the head 54 d is located forward beyond the front end of the stiffener 2, while the first sections 54 a, the second sections 54 b, and the third sections 54 c are not located beyond the front end of the stiffener 2.

FIGS. 8-13 schematically show an electrical connector according to a second embodiment of the present invention. The differences between the second embodiment and the first embodiment are as follows. The load plate 3 has a side portion 35 at each of left and right side of the through hole 30. A bottom surface of each of the side portions 35 is protruded with two first pressing portions 351 and a second pressing portion 352 located between the two first pressing portions 351, for pressing the chip module 6. A width of each of the second pressing portions 352 in the left and right direction is greater than a width of the corresponding first pressing portions 351, so as to avoid deformation of the load plate 3 when the load plate 3 presses the chip module 6. The bottom surface of the load plate 3 is further protruded with a third pressing portion 353. The third pressing portion 353 is located in the front of the first pressing portions 351 and the second pressing portions 352, and the third pressing portion 353 extends from the left side of the through hole 30 to the right side of the through hole 30.

In certain embodiments, each of the left side and the right side of the metal member 42 is extended upward to form an operation portion 424, for an operator to rotate the guide frame 4 (in other embodiments, the number of the operating portions 424 may be one; i.e., the operating portion 424 is disposed only in the left side of the metal member 42 or the right side of the metal member 42). The operating portions 424 are located in the front of the sliding rails 413. When the clamping member 5 is slidably assembled to the guide frame 4, the operating portions 424 stop at two opposite sides of the clamping member 5. When the load plate 3 is in a close state, the operating portions 424 is located at the front of the side portions 35. Side edges of the operating portions 424 do not extend beyond side edges of the load plate 3. Each of the operating portion 424 has a chamfer 4240 disposed at the rear side thereof. The chamfer 4240, from bottom upward, is slant away from the corresponding side portion 35. When the chip module 6 is not assembled, the load plate 3 is opened, and the guide frame 4 is rotated to open, and in this process, there is a clearance between each of the chamfers 4240 and the corresponding side portion 35, so that the interference between the operation portion 424 and the corresponding side portion 35 is avoided. Each of the operating portions 424 has a connecting portion 4241 extending upward, and a holding portion 4242 bending and extending laterally from the connecting portion 4241. As shown in FIG. 11, each of the holding portions 4242 bends inward from the connecting portion 4241. In other embodiments, as shown in FIG. 12, each of the holding portions 4242 may also bend outward from the corresponding connecting portion 4241. In further embodiments, as shown in FIG. 13, each of the holding portions 4242 may extend forward and exceed the corresponding connecting portion 4241, such that the area of the holding portions 4242 is large, and it is easy for the operator to hold the holding portions 4242.

As shown in FIG. 8, .the grasping portion 54 has two first sections 54 a provided at two opposite sides thereof, two second sections 54 b formed by respectively turning and extending forward from the two first sections 54 a to be close to each other, two third sections 54 c formed by respectively turning and extending forward from the two second sections 54 b, and a head 54 d formed by extending from the third sections 54 c. The head 54 d bends upward to be higher than the third section 54 c. The distance between the two first sections 54 a is greater than that between the two third sections 54 c. The width W1 of the head 54 d is greater than the distance W2 between the two third sections 54 c. A part of the perforation 540 is located between the two first sections 54 a, and another part of the perforation 540 is located between the two third sections 54 c. The grasping portion 54 further has a chamfer 541 formed by tilting and extending downward from the front plate 57 to connect the two first sections 54 a.

In summary, the electrical connector according to certain embodiments of the present invention, among other things, has the following beneficial effects.

(1) The stiffener 2 is provided with the first pivoting portion 210 and the second pivoting portion 220 which are located on the same side of the insulating body 1, the carrier is pivoted to the first pivoting portion 210, and the load plate 3 is pivoted to the second pivoting portion 220, so that the carrier and the load plate 3 are opened on the same side of the insulating body 1, thus occupying a small space of the circuit board.

(2) The clamping member 5 is slidably installed on the guide frame 4, thus reducing the difficulty of assembling and disassembling the clamping member 5.

(3) The sliding rails 413 of the guide frame 4 are located between the stiffener 2 and the side plates 51 of the clamping member 5, which can save space.

(4) A protruding portion 416 is formed by protruding upward from the sliding rails 413 to connect the rear arm 412, making the protruding portion 416 higher than the sliding rails 413, so as to enhance the strength of the side arms 411 and prevent the side arms 411 from breaking when the side plate 51 of the clamping member 5 slides on the sliding rails 413.

(5) Two sides of the grasping portion 54 have grasp spaces 55, and the grasp spaces 55 are in communication with the opening 420, which facilitates grasp and saves the space.

(6) The load plate 3 is provided with a receiving hole 33 in front of the through hole 30 and two receiving holes 33 behind the through hole 30, and each receiving hole 33 allows the locking member 34 to pass through to fix the load plate 3 onto the stiffener 2. Thus, an upward pulling force of the load plate 3 applied to the part of the stiffener 2 in front of the frame opening 200 is greater than an upward pulling force of the load plate 3 applied to the part of the stiffener 2 behind the frame opening 200. A reinforce rib 201 is provided in front of the frame opening 200 through the stiffener 2, to reinforce the strength of the part of stiffener 2 in front of the frame opening 200, preventing the part of stiffener 2 in front of the frame opening 200 from deforming.

(7) The grasping portion 54 of the clamping member 5 has two first sections 54 a provided at two opposite sides thereof, two second sections 54 b formed by respectively turning and extending forward from the two first sections 54 a to be close to each other, two third sections 54 c formed by respectively turning and extending forward from the two second sections 54 b, and a head 54 d formed by extending from the third sections 54 c. The distance between the two first sections 54 a is greater than that between the two third sections 54 c. The width W1 of the head 54 d is greater than the distance W2 between the two third sections 54 c. Thus, the strength of the grasping portion 54 of the clamping member 5 is ensured without affecting the space between the load plate 3 and the stiffener 2.

The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.

The embodiments are chosen and described in order to explain the principles of the invention and their practical application so as to activate others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope. Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein. 

What is claimed is:
 1. An electrical connector for electrically connecting a chip module, comprising: an insulating body; a plurality of terminals received in the insulating body, for electrically connecting the chip module; a stiffener surrounding a periphery of the insulating body; a load plate for pressing the chip module, a rear end of the load plate being pivoted to the stiffener; and a clamping member located between the load plate and the stiffener, for fixing the chip module to carry the chip module onto the insulating body, wherein a grasping portion protrudes forward from the clamping member, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections, wherein: the stiffener is provided with a first pivoting portion and a second pivoting portion which are located on a same side of the insulating body, the first pivoting portion is located between the second pivoting portion and the insulating body; a rear end of the load plate is pivoted to the second pivoting portion; a guide frame is pivoted to the first pivoting portion, the guide frame has four edges defining an opening for receiving the chip module; two sliding rails are respectively provided on two opposite sides of the opening; the clamping member is provided with two side plates on two opposite sides thereof, the two side plates are respectively carried by the two sliding rails and slidable along the two sliding rails; and when the clamping member is assembled on the guide frame and the guide frame moves towards a closing direction to be installed on the insulating body, the sliding rails are located on two opposite sides of the insulating body and located between the stiffener and the side plates, and an upper surface of each of the sliding rails is not higher than an upper surface of the insulating body.
 2. The electrical connector of claim 1, wherein when the load plate is closed, the head is located forward beyond a front end of the load plate.
 3. The electrical connector of claim 1, wherein the head bends upward to be higher than the third sections.
 4. An electrical connector for electrically connecting a chip module, comprising: an insulating body; a plurality of terminals received in the insulating body, for electrically connecting the chip module; a stiffener surrounding a periphery of the insulating body; a load plate for pressing the chip module, a rear end of the load plate being pivoted to the stiffener; and a clamping member located between the load plate and the stiffener, for fixing the chip module to carry the chip module onto the insulating body, wherein a grasping portion protrudes forward from the clamping member, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections, wherein: the stiffener is provided with a first pivoting portion and a second pivoting portion which are located on a same side of the insulating body, the first pivoting portion is located between the second pivoting portion and the insulating body; a rear end of the load plate is pivoted to the second pivoting portion; a guide frame is pivoted to the first pivoting portion, the guide frame has four edges defining an opening for receiving the chip module; two sliding rails are respectively provided on two opposite sides of the opening; the clamping member is provided with two side plates on two opposite sides thereof, the two side plates are respectively carried by the two sliding rails and slidable along the two sliding rails; and a first stopping portion is formed by extending upward from each of the sliding rails to be stopped to a side edge of corresponding one of the side plates, a second stopping portion is formed by extending horizontally from each of the first stopping portion, a front end of each of the first stopping portion is flush with a front end of corresponding one of the sliding rails, a groove is concavely disposed from an upper surface of the side plate, the second stopping portion is stopped above the groove, and the second stopping portion is not higher than the upper surface of the side plate.
 5. The electrical connector of claim 4, wherein the front end of each of the second stopping portion is not flush with the front end of corresponding one of the sliding rails.
 6. An electrical connector for electrically connecting a chip module, comprising: an insulating body; a plurality of terminals received in the insulating body, for electrically connecting the chip module; a stiffener surrounding a periphery of the insulating body; a load plate for pressing the chip module, a rear end of the load plate being pivoted to the stiffener; and a clamping member located between the load plate and the stiffener, for fixing the chip module to carry the chip module onto the insulating body, wherein a grasping portion protrudes forward from the clamping member, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections, wherein: the stiffener is provided with a first pivoting portion and a second pivoting portion which are located on a same side of the insulating body, the first pivoting portion is located between the second pivoting portion and the insulating body; a rear end of the load plate is pivoted to the second pivoting portion; a guide frame is pivoted to the first pivoting portion, the guide frame has four edges defining an opening for receiving the chip module; two sliding rails are respectively provided on two opposite sides of the opening; the clamping member is provided with two side plates on two opposite sides thereof, the two side plates are respectively carried by the two sliding rails and slidable along the two sliding rails; and the guide member comprises a plastic member and a metal member insert molded to the plastic member, the plastic member has two opposite side arms and a rear arm connected to the two side arms, the side arms are provided with the sliding rails.
 7. The electrical connector of claim 6, wherein the metal member is provided with two opposite first arms, and a second arm and a third arm connected to the two first arms, the first arms are insert molded into the side arms and the first arms go beyond the side arms along their length directions, the second arm is insert molded into the rear arm, and the third arm bends downward from the first arms to reserve the clamping member when the clamping member is installed to the guide member.
 8. The electrical connector of claim 7, wherein the head is at least partially located right above the third arm when the load plate is closed.
 9. An electrical connector for electrically connecting a chip module, comprising: an insulating body; a plurality of terminals received in the insulating body, for electrically connecting the chip module; a stiffener surrounding a periphery of the insulating body; a load plate for pressing the chip module, a rear end of the load plate being pivoted to the stiffener; and a clamping member located between the load plate and the stiffener, for fixing the chip module to carry the chip module onto the insulating body, wherein a grasping portion protrudes forward from the clamping member, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections, wherein the load plate is provided with a through hole for receiving the chip module, and a plurality of receiving holes respectively in front of and behind the through hole, each receiving hole is provided for a locking member to pass therethrough to fix the load plate to the stiffener, and the load plate is further provided with a bending portion pivoted to the stiffener, and a projection protruding backward at each of the two opposite sides of the bending portion, wherein each of the two projections is provided with one of the receiving holes.
 10. The electrical connector of claim 9, wherein the grasping portion is provided with a perforation located below one of the receiving holes for the locking member to pass through.
 11. The electrical connector of claim 10, wherein the perforation is partially located between the two first sections.
 12. The electrical connector of claim 11, wherein the perforation is partially located between the two third sections.
 13. An electrical connector for electrically connecting a chip module, comprising: an insulating body; a plurality of terminals received in the insulating body, for electrically connecting the chip module; a stiffener surrounding a periphery of the insulating body; a load plate for pressing the chip module, a rear end of the load plate being pivoted to the stiffener; and a clamping member located between the load plate and the stiffener, for fixing the chip module to carry the chip module onto the insulating body, wherein a grasping portion protrudes forward from the clamping member, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections, wherein when the load plate is closed, the head is located forward beyond a front end of the stiffener, and the first sections, the second sections, and the third sections are not located beyond the front end of the stiffener.
 14. The electrical connector of claim 13, wherein when the load plate is closed, the head is located forward beyond a front end of the load plate.
 15. The electrical connector of claim 13, wherein the head bends upward to be higher than the third sections.
 16. A clamping member, having a base portion for fixing a chip module, wherein a grasping portion protrudes forward from the base portion, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections, wherein the clamping member is provided with a perforation vertically penetrating the grasping portion, and the perforation is partially located between the two first sections.
 17. The clamping member of claim 16, wherein the head bends upward to be higher than the third sections.
 18. The clamping member of claim 16, wherein the perforation is partially located between the two third sections.
 19. A clamping member, having a base portion for fixing a chip module, wherein a grasping portion protrudes forward from the base portion, the grasping portion has two first sections provided at each of two opposite sides thereof, two second sections formed by respectively turning and extending forward from the two first sections to be close to each other, two third sections formed by respectively turning and extending forward from the two second sections, and a head formed by extending from the third sections, a distance between the two first sections is greater than a distance between the two third sections, and a width of the head is greater than the distance between the two third sections, wherein the grasping portion has a chamfer formed by tilting and extending downward from the base portion to connect the two first sections.
 20. The clamping member of claim 19, wherein the head bends upward to be higher than the third sections. 